EV Charge Controller Data Caching to Reduce Reboot Power
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Solution Overview
Problem
Frequent reboot actions of vehicle controllers for data communication with external information systems lead to increased power consumption and reduced durability, necessitating a solution to minimize reboots while maintaining information exchange.
Innovation Solution
A charge controller with a storage device and data management section that retrieves and stores vehicular information, allowing selection and supply of relevant data to external systems without accessing the vehicle's controllers, thereby reducing reboot frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the charge controller accesses the vehicle controller to supply vehicular information to the external information system, then the information can be supplied accurately and up-to-date, but the vehicle controller must reboot from low-power condition which increases power consumption and reduces durability
Solution Approach 1:
The charge controller retrieves vehicular information from the vehicle controller during charging operations and stores it in its own storage device in advance. This preliminary action allows the charge controller to supply information to the external information system without requiring the vehicle controller to reboot from low-power condition, thus reducing power consumption while maintaining information availability
Solution Approach 2:
The charge controller acts as an intermediary between the vehicle controller and the external information system. It stores vehicular information locally and supplies selected information to external systems without requiring direct access to the vehicle controller, thereby eliminating the need for frequent reboots of the vehicle controller
2Loss of information
If the charge controller accesses the vehicle controller to supply vehicular information to the external information system, then the information can be supplied accurately, but the frequent reboot actions reduce the durability of the vehicle controller
Solution Approach 1:
The charge controller retrieves and stores vehicular information in advance during charging operations. This preliminary action eliminates the need for frequent reboot actions of the vehicle controller when information is requested by external systems, thereby improving the durability and reliability of the vehicle controller
Solution Approach 2:
The charge controller serves as an intermediary that caches vehicular information locally. By supplying information from its own storage device rather than directly accessing the vehicle controller, it reduces the frequency of reboot actions and thereby enhances the reliability and durability of the vehicle controller
3Use of energy by moving object
If the charge controller stores all vehicular information in its storage device, then information can be supplied without accessing the vehicle controller, but the device complexity and storage requirements increase
Solution Approach 1:
The charge controller extracts and stores only the necessary vehicular information in its storage device during charging operations. This selective extraction approach enables the controller to supply information without accessing the vehicle controller, reducing power consumption while avoiding the need to store all possible vehicular data, thus balancing storage requirements with energy efficiency
Data Source
AI summary
An electric vehicle is able to be charged from a power source via a supply side controller. The supply side controller retrieves and acquires vehicular information from the electric vehicle as an electric connection is established with the electric vehicle. The supply side controller stores the retrieved vehicular information. The vehicular information may contain charging information used for a charging control and non-charging information not used for the charging control. An information device, such as a smart phone, requests to supply the vehicular information. In response to the request, the supply side controller supplies the stored vehicular information to the information device without accessing the battery charger and the vehicular functional device. Accordingly, it is possible to supply the vehicular information without rebooting the controller on the vehicle in response to the request from the information device.